Number 1: 1857 : Perkin and Sons Dye works. Number 2: 1860 : Holliday Dyes and Chemicals Ltd. began the manufacture of dye Magenta. Number 3: 1863 : The Atlas Works, were the pioneers of synthetic dyes of the Magenta family of dyes. Number 4: 1872 : Irvinebank Dyeworks Limited. Number 5: 1876 : The Clayton Aniline Company Ltd.

"Battle of Magenta" that was fought between crown land of the Austrian Empire, and An Italian nationalists in the 1859 near the town of Magenta, during the 2nd Italian War of Independence.